Mongolia

A single teaspoon of soil contains more microorganisms than people on Earth

A teaspoon of soil harbors more microorganisms than Earth's human population

Sorbian languages

There are approximately 7,000 languages globally; one language goes extinct roughly every two weeks

List of countries and territories by number of land borders

Botswana-Zambia border: 150 meters

Lesotho–South Africa border

Lesotho is an enclave entirely surrounded by South Africa

Mandarin Chinese

Mandarin Chinese: ~920 million native speakers

Caspian Sea

The Caspian Sea is the world's largest inland body of water